#ifndef COMPILER_ONLINE
    #include"head.cpp"
#endif

void test1()
{
    int ret = Solution().Diff(10, 2);
    if(ret == 8) std::cout << "通过用例1... OK!" << std::endl;
    else std::cout << "没有通过用例1... fail!"  << std::endl;
}
void test2()
{
    int ret = Solution().Diff(0, 0);
    if(ret == 0) std::cout << "通过用例2... OK!" << std::endl;
    else std::cout << "没有通过用例2... fail!"  << std::endl;   
}
int main()
{
    test1();
    test2();
    return 0;
}